Roving stop motion for spinning frames



Patented `June 19, 1923.

UNITE' -ST GREGOBE K. KAPA'IAS, OF PROVIDENCE, RHODE ISLAND.

ROVING STOP MOTION FOB SPINNING-FRAMES.

Application led October 21, 1922. Serial No. 596,10*?.

in United States Patent No. 1,401,984,`

granted to me January 3, 1921. o n

In the usual construction of spinning frames having no roving stop-motions, the roving when breaking in front of the top rolls, will usually wind up on the rolls or feed out of the rolls and snarl upon the bobbins or adjacent roving, also. the roving may run to waste a material length of time before being noticed by the operator, thereby causing a large amount of ywaste.

The object of my invention is to improve the construction of my previous roving stopmotion, whereby when the roving breaks m or in front of drawing rolls, the roving will be automatically held or broken, back of the drawing rolls, thereby preventin the feed-` ing of the broken rovin throng the rolls, and also a predetermine length of the roving', back of the rolls, will be automatically wound up on a rotatable part of the stopmotion then automatically unwound in a position where it can be easily inserted into the rolls.

A further object of my invention is Ito construct my'improved rovin stop-motion so thatthey may be suspende from a fined part of the spinning frame thereby leaving the top of the spinning frame free for -cleanin urposes. I

y invention consists in the peculiar and novel construction of aroving stop=mot1on for spinning frames, said roving stop-motion having details of construction, as will be more fully set forth hereinafter and claimed. l

Figure 1 is a vertical transverse sectional view. of `part of a spinning frame showing the drawing rolls'and the roving in its normal position through the stop-motion and rolls.

Figure 2 is a, sectional view taken on line 2, 2 of Figure 1 of the stop-motion, looking in the direction of the arrow A.

Figure 3 is an enlarged front view of the rotatable member of the stop-motion, the suporting arm being broken away, and

igure 4 is a transverse sectional view taken on line 4, 4 of Figure 3. 4

Inthe drawing 5 indicates aportion of a spinning frame having the usual lower fluted drawing rolls 6 and leather covered top rolls-7, standard 8 supporting the usual round bar 9 and traverse bar 10 which in this case has a round bearingll for-each of the sto -motions On the frame 5 are the usual all-boards each having an eye 12. The'roving R comes from the usual quills, not shown, over the round bar 9, through the drawing rolls 6 and 7 and e e 12 and isthen wound on the bobbin, not s own, in the usual way. My improved roving stop-motion 13 consists of an adjustable suspension support 14 having an upper clamping end 16, firmly clamped to the round bar 9, and a lower pivot end 17, the support being made in two parts and adjustably secured together by a boltl 18. Pivoted to the pivot end 17 is a nominally horizontal bar 19 having a forked bearing end 20, a series of transverse adjusting holes 21, 21, a vertical hole 22 and a pivot end 23. PivotedA to the forked bearing end 20 is a nominally horizontal arm -24 having an eye 25 on its outer end for the roving'R and a short inner end 26 on which is a weight27 bearing against the underside of the forked bearing end 20, which forms a stop for the weight. Pivotally secured tothe bearing 11 on the traverse bar 10 is a bell-crank' lever 28 having a long arm 29, a short arm 30 and on the side of the long arm 29 is a pin 31. Pivoted to the end of the long arm 29 is a vertical bar 32 adjustably secured by a bolt 33 to a vertical bar 34 which is pivotally secured to the pivot end 23 of the horizontal bar 19. The short arm 30 has a bifurcated end forming bearings 35, 35 for a shaft 36 to which is secured a iluted roll 37 having an annular central groove 38 and a central transverse eye 39 for the roving R. On one end ofthe shaft 36 is secured a grooved pulley 40. Extending vertically through the hole 22 inthe horizontal bar 19 'is a screw-threaded rod 41, having on its lower end a weight 42, on its upper end an eye 43 and a nut 44 in screwthreaded engagement with 'the rod 41 and resting nominally on the horizontal bar 19. A cord 45 is secured at its lower end to the eye 43 and extends upwards over the pin 31 on the bell-crank lever 28, it isv then formed into a loop 46, to allow for the reciprocating of the traverse bar 10 and the end of the cord secured to the pulley 40 on the shaft 36 of the iluted roll 37, as shown in Figures 1 and 3. v

When my improved roving stop-motion is in use, the parts of the stop-motion are nominall in the position as shown in Figure 1. he roving R comes over the round bar 9, through the eye 39 in the fluted roll 37, of the stop-motion, between the bottom and ltop drawing rolls 6 and 7, then through the eye in the bar 24 and then tor the bobbins in the usual way. The stop-motion has its greatest weight back of the pivot end 17 and the tension of the roving Rthrough the eye 25 holds the stop-motion as shown. On the breaking of the roving R back of or in between the drawing rolls 6 and 7 the rear of the stop-motion drops down, thereby bringing the lutted roll 37 of the stopmotion into engagement with the adjacent fiuted drawing roll 6. These luted rolls acting as gears revolves the luted roll 37 of the stop-motion and winds the broken end of the roving R as it comes from the quills, onto the lluted roll 37 in the groove 38. The upper end of the cord 45 is simultaneously wound on the pulley 40 lifting the rod 4l and weight 42. rlhe roving now being broken the weight of the rod 41 and weight 42, through the cord 45 and pulley 40, revolves the fluted roll 37 and unwinds the roving from the luted roll 37 thereby placing the end of the roving in a position to again enter the drawing rolls. The pivoted bar 24 may be raised at any time for dofng the bobbins and the stop-motion is adjustable for different makes of spinning frames, one for each spindle.

It is evident that my improved roving stop-motion could be varied in construction, for different makes of spinning frames or the like, within the scope of the appended claims.

Having thus described my invention l claim as new 1. In a spinning frame having a drawing roll standard, drawing rolls and a bar on the standard, a roving stopfnotion having a suspension support secured to the standard bar, and supporting the operative parts of the stop-motion, a rotatable member having an eye through which the roving passes and forming a part of the stop-motion, said rotatable member being adapted to engage with one of the drawing rolls on the breaking of the roving, whereby on the breaking l meaeeo of the roving, the roving will be wound onto' the 'rotatable member of the stop-motion, for the purpose as described.

2. In a spinning frame having a drawing rolls standard, drawing rolls a bar and a traverse rod having a bearing, a 4roving stop-motion having a suspension support secured to the standard bar and supporting the operative parts of the stopemotiom-a nomially horizontal bar pivotally secured to the lower end of the suspension support and having an eye in its outer end, a bell-crank lever on the bearing of the traverse rod, a bar operatively connecting the nominally horizont-al bar with one arm of the bellcrank lever, the other arm of the bell-crank lever rotatably supporting a rotatable member having an eye for the roving, for the purpose as described.

3. In a roving stop-motion as described, a traverse bar having a bearing, a bell-crank lever on the bearing, one arm of the bell-crank leverl rotatably supporting a fluted roll having an annular groove and an eye for the roving, the other arm of the bell-crank lever being operatively connected with the stopmotion, whereby on the breaking of the roving, the roving will be Wound onto the fluted roll of the stop-motion, and means for giving a retrograde movement to the fluted roll of the stop-motion, for the purpose as described. p

4. A roving stop-motion comprising a. traverse bar having a bearing, a suspension support having a clampin member on its upper end, a nominally horizontal bar pivoted to the lower end of the suspension support and having an eye in its outer end and a vertical hole, a screw-threaded rod in the vertical hole and having a Weight on its lower end, an eye in its upper end and a nut resting on the horizontal bar, a bell-crank lever on the bearing of the traverse rod and having a long and a short arm, a pin on the long arm, a rod operatively connecting the long arm with the horizontal bar, bearings on the short arm in which is a shaft, a fluted rollsec-ured to the shaft and having an annular groove and a central eye, a pulley fixed to the shaft, a cord secured at its lower end to the eye in the screw-threaded rod, said cord extending upwards over the pin on the long arm andY then secured to the pulley so .as to form a loop intermediate the pin and the pulley, for the purpose as described.

In testimony whereof, l have signed my name to this eciication.

G EGORE K. KAPATAS. 

